Duffel interview prep. 8 likely questions.
The process at Duffel, what each stage actually tests, and how candidates prep. Real questions where we have them, likely questions where we don't.
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[01] BY THE NUMBERS
Headline facts before you prep.
Pulled straight from Duffel's career page and public data sources. Tap any cell for the full breakdown.
Full Duffel company profile[02] INTERVIEW PROCESS
Standard software engineering loop at Duffel.
The stages below describe the typical SWE loop. Product, Design, and Data loops differ; pick a role to see how it changes, or jump straight to real questions reported for that role.
01Recruiter Screen
30 min
Recruiter Screen
30 minInitial call to discuss your background, the role, and logistics.
- Research the company and role thoroughly
- Prepare your elevator pitch
- Ask about the interview process and timeline
02Technical Interview
45-60 min
Technical Interview
45-60 minCoding and/or system design questions relevant to the role.
- Practice on LeetCode or similar platforms
- Think out loud and communicate your approach
- Ask clarifying questions before starting
03Behavioral Interview
45 min
Behavioral Interview
45 minQuestions about your past experiences, teamwork, and problem-solving.
- Prepare STAR-format stories
- Focus on specific examples with measurable outcomes
- Show self-awareness about mistakes and learnings
[03] REAL QUESTIONS
Likely questions for Duffel.
8 likely questions inferred from Duffel's open roles and company profile.
Software Engineering
5 questions
Software Engineering
5 questionsCan you explain the process of API integration and what challenges you might face while integrating with third-party services?
Tell me about a time you worked in a team to implement a new feature. What was your role and how did you ensure collaboration?
Describe a situation where you had to adapt to a significant change in a project or technology. How did you handle it?
How would you approach debugging a live application that is experiencing performance issues?
How do you prioritize tasks when you have multiple high-priority issues to address at the same time?
Other Roles
2 questions
Other Roles
2 questionsHow do you align your personal values with the values of a company, and what are you looking for in a workplace culture?
What attracted you to Duffel, and how do you see yourself contributing to our mission of making travel effortless?
Data Science & Analytics
1 question
Data Science & Analytics
1 questionWhat strategies would you use to identify and mitigate fraud in a travel booking system?
How to answer these: the STAR method
Use the STAR method: describe the Situation, the Task you faced, the specific Action you took, and the measurable Result. Aim for 60-90 seconds with one concrete metric. Practice it out loud before the interview so it flows naturally; the same structure works for every question above.
[04] APPLY LOGISTICS
Applications go through Lever.
Duffel runs hiring on Lever, so the application form and recruiter follow-ups flow through it. Use the same email everywhere and keep the profile fields consistent with your resume; recruiters see both side by side.
A talent acquisition suite that combines ATS and CRM capabilities. Lever helps companies build relationships with candidates throughout the hiring process.
Auto-apply currently covers Greenhouse, Workday, and SmartRecruiters. For Lever boards like Duffel's, Scoutify alerts you in real time so you can be one of the first applications in.
ATS identified from the application URLs on Duffel's recent postings
[05] PEOPLE ALSO ASK
Common questions about Duffel interviews.
What is the average salary and compensation structure at Duffel?
Duffel has not publicly disclosed specific salary information for its roles. However, typical compensation for tech positions in London can vary widely, with many positions offering competitive salaries based on experience and skill set. It’s advisable to discuss compensation expectations during the interview process to ensure alignment with your requirements.
What is the interview process like at Duffel?
The interview process at Duffel typically includes technical assessments and behavioral interviews. You can expect questions that evaluate your problem-solving skills, such as troubleshooting complex technical issues and prioritizing multiple high-priority tasks. Being prepared to discuss your experience with specific programming languages and frameworks will also be beneficial.
What is the current hiring volume and what roles are open right now at Duffel?
Duffel currently has 4 active job postings, all based in London. The open roles include a Customer Success Engineer - API, a Customer Success Manager, a Fraud Analyst, and a Travel Support Engineer (Backend & Full Stack). This indicates a focused hiring effort in one city, suggesting a stable demand for talent in these specific areas.
[06] OVERVIEW
What candidates run into at Duffel.
Tech company interviews typically include a mix of coding, system design, and behavioral rounds. The exact format varies by company size and role level.
[07] PREP TIPS
How candidates prepare.
[08] EXPERT FRAMEWORKS
Frameworks and sample answers from interview coaches.
Curated from Columbia Engineering's licensed BigInterview library: expert-written tips, sample answers, and walkthroughs that work for any Software Engineering interview.
Source: BigInterview (licensed by Columbia Engineering)
[09] FAQ
Questions candidates ask about Duffel interviews.
Salary, visa sponsorship, process, hiring volume. Drawn from public data on Duffel.
Duffel has not publicly disclosed specific salary information for its roles. However, typical compensation for tech positions in London can vary widely, with many positions offering competitive salaries based on experience and skill set. It’s advisable to discuss compensation expectations during the interview process to ensure alignment with your requirements.
[10] MORE INTERVIEW PREP
Companies candidates compare with Duffel.
PREP SMARTER. APPLY FASTER.
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